Growth of juvenile Atlantic cod Gadus morhua in land-based recirculation systems: : Effects of feeding regime, photoperiod and diet

The combined effect of feeding regime and photoperiod on the growth of juvenile Atlantic cod Gadus morhua in land-based recirculating aquaculture systems (RAS) was examined using three different commercial diets. Fish of 8-10 g were reared in 1 m³ tanks at an initial density of 10 kg m⁻³ for 78 d. T...

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Published in:Aquaculture 2009-07, Vol.292 (3-4), p.225-231
Main Authors: Fülberth, M, Moran, D, Jarlbæk, H, Støttrup, J.G
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal aquaculture
animal growth
Animal populations
Animal productions
Animal, plant and microbial ecology
Aquaculture
Biological and medical sciences
Cod
cod (fish)
Diet
feed conversion
feeds
fish culture
Fish stocking
Fundamental and applied biological sciences. Psychology
Gadus morhua
General aspects
mariculture
marine fish
photoperiod
recirculating aquaculture systems
Sea water ecosystems
specific growth rate
Synecology
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creator Fülberth, M
Moran, D
Jarlbæk, H
Støttrup, J.G
description The combined effect of feeding regime and photoperiod on the growth of juvenile Atlantic cod Gadus morhua in land-based recirculating aquaculture systems (RAS) was examined using three different commercial diets. Fish of 8-10 g were reared in 1 m³ tanks at an initial density of 10 kg m⁻³ for 78 d. Three RAS units were used to simultaneously test three feed/photoperiod regimes that might be encountered in the wild or aquaculture; LightDark (LD) 24:0, LD12:11 (+1 h crepuscular periods) and LD6:6 (+12 h crepuscular periods). Feed was administered during the light period every 30 min for a 3 min feeding duration. In each RAS unit three diets (A, B and C) were tested, which were broadly similar in composition but from different manufacturers. Water exchange rate averaged 10-19% in the three recirculation systems, and key water quality parameters such as NH₄ ⁺ and CO₂ remained at low effect concentrations (
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source ScienceDirect Freedom Collection 2022-2024
subjects Animal and plant ecology
Animal aquaculture
animal growth
Animal populations
Animal productions
Animal, plant and microbial ecology
Aquaculture
Biological and medical sciences
Cod
cod (fish)
Diet
feed conversion
feeds
fish culture
Fish stocking
Fundamental and applied biological sciences. Psychology
Gadus morhua
General aspects
mariculture
marine fish
photoperiod
recirculating aquaculture systems
Sea water ecosystems
specific growth rate
Synecology
title Growth of juvenile Atlantic cod Gadus morhua in land-based recirculation systems: : Effects of feeding regime, photoperiod and diet
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